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Use the data in Exercise 2 4 to answer the same four questions regarding life expectancy of males. Who is more likely to benefit from
Use the data in Exercise to answer the same four questions regarding life expectancy of males. Who is more likely to benefit from adding more physicians to the population? Explain.
a Construct a scatterplot of female life expectancy against the peopletophysician ratio. Superimpose a linear trend and a logarithmic trend to determine the appropriate model.
b Estimate a simple linear regression model with life expectancy of females as the response variable and the peopletophysician ratio as the explanatory variable. What happens to life expectancy of females as the peopletophysician ratio decreases from to
c Estimate a logarithmic regression model with the natural log of the peopletophysician ratio as the explanatory variable. What happens to the life expectancy of females as the peopletophysician ratio decreases from to
d Use R to determine which of the preceding two models is more appropriate.
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